Ask any group of killikeepers about snails in their tanks, and you’re liable to get different answers from each of them. Some wouldn’t raise fish without snails; others swear at them and won’t have them under any conditions. Most aquarists fall somewhere between the two extremes.
Ted Klotz has red ramshorn snails “in my tanks and they don’t appear to bother the eggs. When I add food to the tank (brine shrimp, bloodworms) the snails make a bee line for the food. This is the main reason I add them, to eat any uneaten food and dead brine shrimp nauplii.”
Another breeder had a “bloom” of pond snails in a breeding tank for Aphyosemion zygaima. He was prepared to move them to a snail free tank, but noticed that the mops had the usual number of eggs, even when the snail population peaked. When he left the mops (and the snails) alone, the eggs hatched out in the tank without any problems.
— G.C.K.A. Newsetter, November 1998